<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <img src="./images/1.webp" alt="">
    <script>
        // 只要用到随机数，就写一个函数 n到m的随机数
        function num(N, M) {
            return Math.floor(Math.random() * (M - N + 1) + N)
        }

        // 1. 获取图片对象
        let img = document.querySelector('img')
        // 2. 随机得到序号
        let i = num(1,6)
        // 3. 更换路径
        img.src=`./images/${i}.webp`
    </script>
</body>

</html>